Twitter has officially been described in the past as the “Mini Blog” by excellence. People can talk about anything they want in under 140 characters. Things of relevance, their interests and what not’s. The problem here is that “Mini Blog” doesn’t quite wrap everything up. People who aren’t particularly very fond of keeping updated or reading in general, just tweet whatever they’re doing in that moment (guilty as charged sometimes). But see? That doesn’t mean that what they are doing is wrong. It just means that people have found many more uses to the platform.
Perhaps you are in the mood to share with the world just how incredible your lunch was or how you were just about to crash with some other driver on your way to work. Then again, if you have several followers, the update on how you managed to swallow a nasty thirty second scare would only interest those who you are close friends with. Why would the rest care about that?
You may come to think that this platform is purely impersonal, while others think it the quintessential bridge to their friends to let them know what they are doing every second that goes by… (yeah, so may be you took it a tad too seriously). Anyway, the point is, regardless of the use you want to give to it, you should write to your followers.
The only description I agree with regarding Twitter is the fact that you aren’t writing for yourself. You are writing for a small audience out there. Then, shouldn’t your mission be to write about what would interest your audience? If it were entirely to your eyes only, then why make it public? That’s why people keep journals, so no one else can see.
My best advice is that should you use Twitter, use it for whatever topic or issue you care the most, but ALSO and more importantly, find the right audience for that and stick to the loyalty of their “followership”. If not, you may find that your numbers are quickly diminishing.